首页|Activation of peroxymonosulfate by FeVO3_x for the degradation of carbamazepine:Vanadium mediated electron shuttle and oxygen vacancy modulated interface chemistry

Activation of peroxymonosulfate by FeVO3_x for the degradation of carbamazepine:Vanadium mediated electron shuttle and oxygen vacancy modulated interface chemistry

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Fast Fe(Ⅲ)/Fe(Ⅱ)circulation in heterogeneous peroxymonosulfate(PMS)activation remains as a bottle-neck issue that restricts the development of PMS based advanced oxidation processes.Herein,we pro-posed a facile ammonia reduction strategy and synthesized a novel FeVO3-x catalysts to activate PMS for the degradation of a typical pharmaceutical,carbamazepine(CBZ).Rapid CBZ removal could be achieved within 10 min,which outperforms most of the other iron or vanadium-based catalysts.Electron para-magnetic resonance analysis and chemical probe experiments revealed SO4·-,·OH,O2·-and high valent iron(Fe(Ⅳ))were all generated in this system,but SO4·-and Fe(Ⅳ)primarily contributed to the degrada-tion of CBZ.Besides,X-ray photoelectron spectroscopy and X-ray adsorption spectroscopy indicated that both the generated low-valent V provides and oxygen vacancy acted as superior electron donors and ac-celerated internal electron transfer via the unsaturated V-O-Fe bond.Finally,the proposed system also exhibited satisfactory performance in practical applications.This work provides a promising platform in heterogeneous PMS activation.

PeroxymonosulfateFe(Ⅲ)/Fe(Ⅱ)cycleElectron shuttlesOxygen vacancyBimetallic catalysts

Leiduo Lai、Hongyu Zhou、Yichen Hong、Mengfan Luo、Yang Shi、Heng Zhang、Zhaokun Xiong、Gang Yao、Bo Lai

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State Key Laboratory of Hydraulics and Mountain River Engineering,College of Architecture and Environment,Sichuan University,Chengdu 610065,China

Sino-German Centre for Water and Health Research,Sichuan University,Chengdu 610065,China

Chengdu Baixi Environmental Technology Company,Chengdu 610065,China

Institute of Environmental Engineering,RWTH Aachen University,Germany

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Shanghai Tongji Gao Tingyao Environmental Science and Technology Development Foundation国家自然科学基金国家自然科学基金Sichuan science and Technology Program:Key Research and Development ProgramSichuan science and Technology Program:Key Research and Development ProgramSichuan science and Technology Program:Key Research and Development Program

520701332022NSFSC09722019YFG03142017SZ01802019YFG0324

2024

10.1016/j.cclet.2023.108580

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(1)
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